The form of the CR energy spectrum up to (Tien-Shan data)

Shaulov, S. B.; Besshapov, S. P.; Cherdintseva, K.V.; Chubenko, A. P.; Данилова, Э. В.; Janseitova, J. K.; Nam, R.A.; Nesterova, N. M.; Nikolskaya, N. M.; Pavluchenko, V. P.; Piskal, V.V.; Vildanov, N. G.; Vildanova, L. I.

doi:10.1016/j.nuclphysbps.2009.09.034

Cited by 3 publications

(8 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the families accompanied by the EAS which belong to this N e range the spectra of gamma rays become essentially harder: the β index of their power approximation drops down to ∼1.3. At the same time, the model spectra simulated for the EAS with corresponding primary energies E 0 (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15) PeV remain having the same slope around β 1.9 as before.…”

Section: Energy Distribution Of the High Energy Hadrons Of Eas Core I...supporting

confidence: 54%

“…at N e (1-3) • 10 6 and E 0 (3-6) PeV. In the families which belong to the 7th and 8th interval, between N e (3-10) • 10 6 and E 0 (6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) PeV, the gamma ray spectra become essentially harder, with noticeable decrease of curves inclination in figure 8 and diminishing of β indices in table 2. Among the most powerful EAS of 12th interval, those with N e 5 • 10 7 (E 0 100 PeV), the x γ spectrum restores the initial soft shape with β (1.8-1.9), or becomes even softer.…”

Section: Energy Distribution Of the High Energy Hadrons Of Eas Core I...mentioning

confidence: 97%

“…the drop of its β index in figure 9) among a particular group of gamma families is equivalent to increase of the average hadron energy E h in the EAS connected with these events. It is this effect that manifests itself through deviation from scaling behavior in the gamma ray spectra of the families which correspond to the EAS with the sizes between N e (1-10) • 10 6 , or with the primary energy E 0 (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) PeV. An appearance in the same energy range of the events with anomalously high E γ (and consequently E h ), and with peculiarly large density of particles in their cores, actually sufficient for halo production, is another evidence of the presence in the region of scaling violation of some specific class of EAS events.…”

Section: The Gamma Ray Spectrum In the Families With Halomentioning

confidence: 99%

“…between the E 0 limits of (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) PeV, and then it returns back to its initial, or somewhat larger, value in the interval E 0 (20-100) PeV.…”

Section: Introductionmentioning

confidence: 99%

“…Up to the present time detailed examination of the data on electromagnetic EAS component has revealed a rather complicated spectrum structure around the knee region. Until the energy of E 0 3 PeV the index of spectrum slope γ there remains equal to 2.75, then it experiences two breaks at 3 PeV and 100 PeV, such that γ 3.0 between E 0 (3-100) PeV; then the slope grows up to 3.1-3.3 [7][8][9][10][11]. As a rule, by the EAS investigation approach any irregularities in the energy spectrum of cosmic rays were interpreted as discontinuities in the abundance of particular nuclear components with increasing atomic numbers Z, such that the break for all nuclei types occurs at the same rigidity of magnetic cut-off, R c ∼ E 0 /Z.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Scaling violation in interaction of cosmic ray hadrons and the nature of the 3 PeV knee in the spectrum of primary cosmic rays

Shaulov¹,

Vildanova²,

Kupriyanova³

et al. 2021

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

Energy spectra of the most energetic hadrons in the core region of extensive air showers (EASs) were studied in dependence on the EAS energy E 0 in the hybrid experiment HADRON at the Tien Shan mountain cosmic ray station. For the first time by direct measurement it was found in this experiment that the slope of the power energy spectrum of EAS hadrons diminishes itself locally, and the average hadron energy, correspondingly, increases between the E 0 borders 3 PeV and 20 PeV. Such behavior agrees with threshold appearance in EAS, in the same energy range, of a long-flying penetrative component which was earlier revealed at the Tien Shan station. Now we reconsider this Tien Shan result in comparison with the new data of modern collider experiments. The analysis permits to state unambiguously an astrophysical nature of the penetrative EAS component, and to discuss its probable connection with the origin of the famous knee in the energy spectrum of cosmic rays at E 0 ≃ 3 PeV.

show abstract

Section: Energy Distribution Of the High Energy Hadrons Of Eas Core I...supporting

confidence: 54%

Section: Energy Distribution Of the High Energy Hadrons Of Eas Core I...mentioning

confidence: 97%

Section: The Gamma Ray Spectrum In the Families With Halomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Scaling violation in interaction of cosmic ray hadrons and the nature of the 3 PeV knee in the spectrum of primary cosmic rays

Shaulov¹,

Vildanova²,

Kupriyanova³

et al. 2021

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

show abstract

Characterization of the atmospheric muon flux in IceCube

Aartsen¹,

Abraham²,

Ackermann³

et al. 2016

Astroparticle Physics

101

117

View full text Add to dashboard Cite

Muons produced in atmospheric cosmic ray showers account for the by far dominant part of the event yield in large-volume underground particle detectors. The IceCube detector, with an instrumented volume of about a cubic kilometer, has the potential to conduct unique investigations on atmospheric muons by exploiting the large collection area and the possibility to track particles over a long distance. Through detailed reconstruction of energy deposition along the tracks, the characteristics of muon bundles can be quantified, and individual particles of exceptionally high energy identified. The data can then be used to constrain the cosmic ray primary flux and the contribution to atmospheric lepton fluxes from prompt decays of short-lived hadrons.In this paper, techniques for the extraction of physical measurements from atmospheric muon events are described and first results are presented. The multiplicity spectrum of TeV muons in cosmic ray air showers for primaries in the energy range from the knee to the ankle is derived and found to be consistent with recent results from surface detectors. The single muon energy spectrum is determined up to PeV energies and shows a clear indication for the 2 emergence of a distinct spectral component from prompt decays of short-lived hadrons. The magnitude of the prompt flux, which should include a substantial contribution from light vector meson di-muon decays, is consistent with current theoretical predictions.The variety of measurements and high event statistics can also be exploited for the evaluation of systematic effects. In the course of this study, internal inconsistencies in the zenith angle distribution of events were found which indicate the presence of an unexplained effect outside the currently applied range of detector systematics. The underlying cause could be related to the hadronic interaction models used to describe muon production in air showers.

show abstract

Scaling violation in interaction of cosmic ray hadrons and the nature of the 3 PeV knee in the spectrum of primary cosmic rays

Shaulov,

Shepetov,

Kupriyanova

et al. 2021

Preprint

View full text Add to dashboard Cite

Energy spectra of the most energetic hadrons in the core region of extensive air showers (EAS) were studied in dependence on the EAS energy E 0 in the hybrid experiment HADRON at the Tien Shan mountain cosmic ray station. For the first time by direct measurement it was found in this experiment that the slope of the power energy spectrum of EAS hadrons diminishes itself locally, and the average hadron energy, correspondingly, increases between the E 0 borders 3 PeV and 20 PeV. Such behavior agrees with threshold appearance in EAS, in the same energy range, of a long-flying penetrative component which was earlier revealed at the Tien Shan station. Now we reconsider this Tien Shan result in comparison with the new data of modern collider experiments. The analysis permits to state unambiguously an astrophysical nature of the penetrative EAS component, and to discuss its probable connection with the origin of the famous knee in the energy spectrum of cosmic rays at E 0 3 PeV.

show abstract

The form of the CR energy spectrum up to (Tien-Shan data)

Cited by 3 publications

References 4 publications

Scaling violation in interaction of cosmic ray hadrons and the nature of the 3 PeV knee in the spectrum of primary cosmic rays

Scaling violation in interaction of cosmic ray hadrons and the nature of the 3 PeV knee in the spectrum of primary cosmic rays

Characterization of the atmospheric muon flux in IceCube

Scaling violation in interaction of cosmic ray hadrons and the nature of the 3 PeV knee in the spectrum of primary cosmic rays

Contact Info

Product

Resources

About